With Hilti adhesives, full strength is typically reached after about 90 minutes for HY-200R (fast curing injection epoxy), 12 hours for RE-500 (slow curing injection epoxy), or 30 minutes for HVU (individual capsules). These times get longer at lower rock temperatures though. The product user manuals specify tables of minimum times before you can touch the anchor, and before you can load the anchor, for different temperature ranges. The 200R cures so quickly that you can feel it getting warm inside the mixing nozzle as it reacts, and it'll harden and block the nozzle in under 10 minutes unless you're very regularly squeezing it though. (I.e. Having all holes prepared and ready to go, and gluing one after the other as you rappel down from the top.)